\begin{tikzpicture}
    \draw (2, 0) circle [x radius=2, y radius=1];
    \node at (2, -1.5) {正数集合};
    \draw (8,0) circle [x radius=2, y radius=1];
    \node at (8, -1.5) {负数集合};

    \node at (0.8, 0.5) {$4.8$};
    \node at (1.8, 0.5) {$+73$};
    \node at (2.8, 0.5) {\Large $\frac{1}{6}$};
    \node at (1.8, -0.5) {\Large $+\frac{7}{12}$};
    \node at (2.8, -0.5) {……};

    \node at (7.0, 0.5) {$-11$};
    \node at (8.0, 0.5) {$-2.7$};
    \node at (6.9, -0.5) {$-8.12$};
    \node at (7.9, -0.5) {\Large $-\frac{3}{4}$};
    \node at (8.9, -0.5) {……};
\end{tikzpicture}
